Files
linux-nvgpu/drivers/gpu/nvgpu/gp106/clk_arb_gp106.h
Debarshi Dutta 519948a9c6 gpu: nvgpu: add igpu support for clk_arbiter.
This patch constructs clk_arbiter specific code for gp10b as well as
gv11b and does the necessary plumbing in the clk_arbiter code. The
changes made are as follows.

1) Constructed clk_arb_gp10b.* files which add support for clk_arb
related HALS including the nvgpu_clk_arb_init and nvgpu_clk_arb_cb.
This doesn't have support for debugfs nor the VFUpdateEvent yet and
consequently no support for arb->notifications.

2) Added gpcclk specific variables corresponding to every gpc2clk in
a given clk_arb related struct.

3) Linux specific support_clk_freq_controller is assigned true in
platform_gp10b.c and platform_gv11b.c files.

4) Incremented the clk_arb_worker.put atomic variable during
worker_deinit so as to allow the worker thread to be stopped.

5) Added the flag clk_arb_events_supported as part of struct
nvgpu_clk_arb. This flag is used to selectively account for the extra
refcounting present in OS specific code i.e.
nvgpu_clk_arb_commit_request_fd. For igpus, the extra refcount is
reduced during nvgpu_clk_arb_release_completion_dev.

Bug 2061372

Change-Id: Id00acb106db2b46e55aa0324034a16a73723c078
Signed-off-by: Debarshi Dutta <ddutta@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1774281
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
2018-09-20 10:50:12 -07:00

40 lines
1.7 KiB
C

/*
* Copyright (c) 2016-2018, NVIDIA CORPORATION. All rights reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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*/
#ifndef CLK_ARB_GP106_H
#define CLK_ARB_GP106_H
struct nvgpu_clk_session;
struct nvgpu_clk_arb;
u32 gp106_get_arbiter_clk_domains(struct gk20a *g);
int gp106_get_arbiter_f_points(struct gk20a *g,u32 api_domain,
u32 *num_points, u16 *freqs_in_mhz);
int gp106_get_arbiter_clk_range(struct gk20a *g, u32 api_domain,
u16 *min_mhz, u16 *max_mhz);
int gp106_get_arbiter_clk_default(struct gk20a *g, u32 api_domain,
u16 *default_mhz);
int gp106_init_clk_arbiter(struct gk20a *g);
void gp106_clk_arb_run_arbiter_cb(struct nvgpu_clk_arb *arb);
void gp106_clk_arb_cleanup(struct nvgpu_clk_arb *arb);
#endif /* CLK_ARB_GP106_H */